2016. Parallel reaction monitoring using quadrupole-orbitrap mass spectrometer: Principle and applications. Proteomics 16: 2146-2159.Bourmaud, A.; Gallien, S.; Domon, B. Parallel reaction monitoring using quadrupole-Orbitrap mass spectrometer: Principle and applications. Proteomics 2016, 15, 2146-2159...
FTICRmass spectrometers operate on a different principle, where ions are confined using a strong magnetic field from a superconducting magnet. The ions cycle within the FTICR at frequencies inversely proportional to theirm/zratios and induce an alternating current within FTICR. This time-varying ...
FIGURE 8-25.Simplified schematics of the functioning principle of the quadrupole mass analyzer. The ion whose mass-to-charge ratio does not lead to a reasonance state will hit one of the four rods before reaching the detector. The reasonant ion will pass through the analyzer in an overall st...
Measurement principle The Residual Gas Analyzer consists of an ion source, a mass spectrometer, and a measurement section. The residual gas is ionized when it collides with the thermoelectrons discharged from the high-temperature filament, and the ions that are thereby created accelerate and converge...
resolution and mass accuracy of the TOF instruments, and also from their ability to record all ions in parallel, without scanning. In principle, it is still possible to performQ1 scans for single MS analysis by using the TOF section as a total ion current detector only. However, owing to ...
describes the principle of operation and the analytical theory of multipole devices obtained by generalizing the geometry of the well-known quadrupole mass ... I Szabo - 《International Journal of Mass Spectrometry & Ion Processes》 被引量: 86发表: 1986年 Analysis of glycosyl bond cleavage and re...
In principle, the direct current bias voltage may be increased as the mass-to-charge ratio of the target ion increases. However, if the absolute value of the voltage is too large, the potential barrier created by the voltage difference from the direct current bias voltage applied to the quad...
Because the frequency is the primary quantity that is scanned, there is, in principle, no upperm/zlimit. The frequency signal is constructed from a stabilized base clock using a field programmable gate array. This signal drives integrating amplifiers which generate the trapezoidal waves. For a ...
Due to the principle of mass determination in time-of-flight mass spectrometry (Tof-MS), representative HRMS, all ions are introduced into Tof in pulses; thus, the duty cycle (the proportion of time that a mass analyzer transmits the ions of interest for analysis in each experimental cycle)...
It uses the electrostatic principle rather than the magnetic effect. The device is rarely used except under certain test conditions. Almost all storage rings include a device of this type for the reasons stated above. 展开 关键词: particle accelerators electrostatic lenses engineering drawings spear ...